Slottsfncts.cpp
// Programmer: Clayton Price date: 4/9/19
// File: slottsfncts.cpp
// Purpose: This file contains the function definitions for the
// functions used int he slotts simulation program.
#include "slotts.h"
using namespace std;
// This function outputs message of welcome to users.
// Pre: none.
// Post: message output to the screen welcoming user.
void welcome()
{
cout<<"\n\nWELCOME TO MOE'S. LET'S PLAY THE SLOTS!"<<endl<<endl;
return;
}
// This function outputs message of farewell to users.
// Pre: none.
// Post: message output to the screen.
void goodbyes()
{
cout<<"\nTHANKS FOR PLAYING. COME AGAIN !! "<<endl;
return;
}
// This function will present a menu to the user and return a valid choice
// Pre: none.
// Post: menu is presented to user and only a valid char is returned.
char present_menu()
{
char choice;
do // present menu
{
cout<<"\n\n\t\tOPTIONS"<<endl<<endl
<<"\t1. Check Bankk Balance"<<endl
<<"\t2. Transfer Funds"<<endl
<<"\t3. Play"<<endl
<<"\t4. Leave/Cash Out"<<endl<<endl;
cout<<"\t\tYour choice: ";
cin>>choice;
} while (choice != '1' && choice != '2' && choice != '3' && choice != '4'
&& choice != 'c' && choice != 't' && choice != 'p' && choice != 'l'
&& choice != 'x');
return choice;
}
// The establish_bankBalance function will randomly give the player a bank bala
// between and including MIN_INITIAL_BAL and MAX_INITIAL_BAL, set first_time
// to false, set bank_bal_checked to true.
// Pre: none.
// Post: The bank_bal is set between and including MIN_INITIAL_BAL and MAX_INIT
// bank_bal_checked is true (ref var), first_time is set false (ref var).
void establish_bankBalance(bool & first_time,bool & bal_checked,float &
bank_balance)
{
int min=MIN_INITIAL_BAL / 100;
int max=MAX_INITIAL_BAL / 100;
first_time = false;
bal_checked = true;
bank_balance = static_cast<float>( (rand()%(max - min + 1) + min)*100 );
return;
}
// The show_balances function will display to the scree the game balance and
// the bank balance.
// Pre: none.
// Post: bank and game balances are displayed to the screen.
void show_balances(const float game_bal,const float bank_bal)
{
cout<<"\n\n\t\tYour Funds: "<<endl
<<"\t\t\tBankk Balance: $"<<bank_bal<<endl
<<"\t\t\tGame Balance: $"<<game_bal<<endl<<endl;
return;
}
// The transfer function will query the user for an amount of money to transfer
// and deduct a proper amount from the bank balance and add that to the game
// balance and sets funds_trasnferred to true.
// Pre: none.
// Post: valid transfer amount entered by user is deducted from bank bal (ref
// var) and added to the game bal (ref var). funds_transferred is now true.
void transfer(bool & funds_transferred,float & bank_bal,float & game_bal)
{
int trans_amount;
funds_transferred = true; //flags that this choice has been made
do
{
do
{
cout<<"\nHow much money do you want to transfer: ";
cin>>trans_amount;
if(trans_amount<=0)
cout<<"\n\t\tERROR; You can't transfer negative dollars! Try again."
<<endl;
} while(trans_amount < 0);
if (trans_amount > bank_bal)
cout<<"\n\t\tERROR: You don't have that much money in the bank! Try again."
<<endl;
} while (trans_amount > bank_bal);
bank_bal-=trans_amount; //diminish bank account
game_bal+=trans_amount; //add to game balance
return;
}
// The play game function will play the slots for the user based on how much
// money he/she has in the game.
// Pre: none.
// Post: The player's game_bal will be increased or decreased according to
// winnings or losses.
void play_game(float & game_bal)
{
float pre_game = 0; // used for temp var
short num_spins=0; // number of spins by user
short tumbler1,tumbler2,tumbler3; // values for each reel
char reel1,reel2,reel3; // chars for each reel
if (!game_bal) //no game money
cout<<"\n\t\tYou haven't any money to gamble with. Go find some!"
<<endl;
else
{
do
{
cout<<"\n\t\tHow many spins do you desire: ";
cin>>num_spins;
} while (num_spins <=0); //positive num spins check
if (num_spins*NO_MATCH_LOSS > game_bal)
cout<<"\n\tSO SORRY: you haven't enough money on the table\n "
<<"\tto cover the possible loss from "<<num_spins<<" spins."
<<endl;
else // playing!
{
pre_game = game_bal;
for(int i=1; i<=num_spins; i++) //for each spin of the slots
{
tumbler1=rand()%NUM_SIDES; //pick first side random
if(i<=MIN_CHEAT_SPINS || (game_bal-pre_game)<MAX_TOLLERANCE) //fair play
{
tumbler2=rand()%NUM_SIDES; //...also others non-cheating
tumbler3=rand()%NUM_SIDES;
}
else
cheat(tumbler1,tumbler2,tumbler3); // cheating !!
reel1=(tumbler1==0?'a':(tumbler1==1?'b':(tumbler1==2?'c':'d')));
reel2=(tumbler2==0?'a':(tumbler2==1?'b':(tumbler2==2?'c':'d')));
reel3=(tumbler3==0?'a':(tumbler3==1?'b':(tumbler3==2?'c':'d')));
cout<<reel1<<' '<<reel2<<' '<<reel3;
if (reel1==reel2 && reel2==reel3) // ALL MATCH
{
cout<<"\tTHREE OF A KIND: You win $"<<TWO_MATCH_WIN<<"!!\n";
game_bal+=TWO_MATCH_WIN;
}
else if(reel1 != reel2 && reel1 != reel3 && reel2 != reel3)//NO MATCH
{
cout<<"\tNO MATCHES: You lose $"<<NO_MATCH_LOSS<<".\n";
game_bal-=NO_MATCH_LOSS;
}
else // ONE MATCH
{
cout<<"\tONE MATCH: You win $"<<ONE_MATCH_WIN<<"!\n";
game_bal+=ONE_MATCH_WIN;
}
}
cout<<"\n\tTOTAL "<<((pre_game-game_bal)<0?"GAIN":"LOSS")<<" is: $"
<<((pre_game-game_bal)<0?-(pre_game-game_bal):pre_game-game_bal)
<<endl;
}
}
return;
}
// The cheat function will return via ref parameters the values of tumblers 2
// and 3 based on the value of tumbler 1. Their values will be such that no
// match is possible.
// Pre: none.
// Post: values for tumblers 2 and 3 are established for these ref variables
// based on the value of tumbler 1.
void cheat(const short tum1, short & tum2, short & tum3)
{
tum2=(tum1+2)%NUM_SIDES;
tum3=(tum1+3)%NUM_SIDES;
return;
}